bash

source

General shell function

• UNIX shell program interprets user commands.
• Shell scripts are interpreted, not compiled.
• The shell reads commands from the script line per line and searches for those commands on the system.
• The main task of a shell is providing a user environment, which can be configured individually using shell resource configuration files.

Shell types

• sh
• Bash. Commands work in sh also work in bash
• csh. C shell
• tcsh. Turbo C shell
• ksh

What is X?

X is the standard graphical user interface for Linux. Like other graphical user interfaces such as Microsoft Windows and Mac OS, X lets you interact with programs by using a mouse (or other pointing device) to point and click, providing a simple means of communicating with your computer.|